US4539469A - Oven control circuitry cooling system for a double-stack food preparation oven arrangement - Google Patents
Oven control circuitry cooling system for a double-stack food preparation oven arrangement Download PDFInfo
- Publication number
- US4539469A US4539469A US06/600,837 US60083784A US4539469A US 4539469 A US4539469 A US 4539469A US 60083784 A US60083784 A US 60083784A US 4539469 A US4539469 A US 4539469A
- Authority
- US
- United States
- Prior art keywords
- oven
- control circuitry
- air
- flow
- compartment
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/006—Arrangements for circulation of cooling air
Definitions
- This invention pertains to food preparation ovens, and more particularly to a cooling system for oven control circuitry in a double-stack food preparation oven arrangement.
- oven control circuitry which operates and monitors the ovens during the cooking process.
- most oven control boxes containing the oven control circuitry are mounted directly on, or in close proximity to, the oven, and if this environment becomes too warm due to the escaping radiating heat from the cooking chamber, the oven control circuitry may provide improper operation or monitoring of the cooking process, or even prematurely fail.
- the occurrence of either of these two situations is highly undesirable since either will result in an improperly cooked food product.
- the above problem is particularly exacerbated in a double-stack food preparation oven arrangement comprising two vertically stacked food preparation ovens wherein the upwardly radiating heat from the lowermost oven contacts and heats the oven control circuitry or the mounting surfaces on which the circuitry is disposed.
- the two primary sources of this escaping radiating heat are generally the cooking chamber and the conveyor device extending through the horizontally disposed oven passageway for conveying cooked food products from the cooking chamber.
- Another source of the escaping radiating heat can be the oven plenum containing the heat supplying device or apparatus, however, this potential source is generally of secondary importance since it is usually disposed near the back of the oven, while the oven control circuitry is generally disposed near the front of the oven.
- the close proximity of the uppermost oven's control circuitry and mounting surfaces to the lowermost oven subjects the circuitry and mounting surfaces to a much hotter environment than if the ovens were situated side-by-side, thereby requiring an inordinate amount of forced cooling air to lower the temperature of the control circuitry environment.
- the present invention provides a solution to the problem of overheating the oven control circuitry and its mounting surfaces by providing, in one embodiment thereof, a double wall assembly having a mounting wall on which the oven circuitry is disposed and an exterior wall spaced apart from and on the opposite side of the mounting wall from the circuitry; the exterior wall being disposed substantially between the mounting wall and the radiating heat.
- the mounting wall and the exterior wall form therebetween a ventilating compartment having an inlet and an outlet, and a ventilating device is provided for moving a flow of cooling air through the inlet and the ventilating compartment and out the outlet.
- the double wall assembly provides a continuous flow of cooling air between the mounting wall and exterior wall to substantially insulate the oven control circuitry from the high temperatures of the radiating heat.
- Further cooling of the oven control circuitry is provided by enclosing the circuitry within an enclosure mounted on the mounting plate, wherein the enclosure includes an intake opening and an exhaust opening in communication with the inlet of the ventilating compartment.
- the ventilating device is disposed within the enclosure between the intake opening and exhaust opening, and moves air through the intake opening over the oven control circuitry for the cooling thereof and out the exhaust opening.
- the flow of cooling air is then further moved by the ventilating device through the inlet and ventilating compartment for providing a dynamic flow of air therethrough to insulate the circuitry from the radiating heat of the lowermost oven.
- Increased insulation of the oven control circuitry and its mounting surfaces is provided by a plurality of outlets in the ventilating compartment wherein some of the outlets have louver-like deflectors to direct the flow of exhausting cooling air downwardly and laterally away from the ventilating compartment and enclosure, thereby deflecting the upwardly radiating heat downwardly and laterally away from the ventilating compartment and enclosure.
- an air curtain or buffer zone of cooler ambient air is established between the upwardly radiating heat and the enclosure to prevent the heat from being drawn through the enclosure intake opening.
- the enclosure is further provided with a plurality of intake openings partially surrounding the oven control circuitry enclosed in the enclosure.
- the flow of cooling air drawn through the plurality of intake openings then flows over the oven control circuitry from different directions to further enhance the cooling thereof.
- a food preparation oven including a cooking chamber and oven control circuitry, a cooling system for cooling the oven control circuitry from radiating heat
- a cooling system for cooling the oven control circuitry from radiating heat comprising a double wall assembly having a mounting wall with the oven control circuitry mounted thereon, and an exterior wall spaced apart from and on the opposite side of the mounting wall from the circuitry.
- the exterior wall is disposed substantially between the mounting wall and the radiated heat, and the mounting wall and exterior wall form therebetween a ventilating compartment having an inlet for receiving a flow of cooling air and an outlet for exhausting the flow of air.
- a ventilating device moves the flow of cooling air through the inlet and ventilating compartment and out the outlet so that the oven control circuitry is substantially insulated from the radiated heat.
- a cooling system for the oven control circuitry comprising a double wall assembly having a mounting wall with the oven control circuitry of the uppermost food preparation oven mounted thereon, and an exterior wall spaced apart from and on the opposite side of the mounting wall from the circuitry.
- the exterior wall is generally horizontally disposed substantially between the mounting wall and upwardly radiating heat from the lowermost food preparation oven.
- the mounting wall and exterior wall form therebetween a ventilating compartment having a generally vertically disposed continuous sidewall and an inlet for receiving a flow of cooling air and an outlet for exhausting the flow of air.
- a ventilating device moves the flow of cooling air through the inlet and through the ventilating compartment and out the outlet, whereby the oven control circuitry of the uppermost oven is substantially insulated from the upwardly radiating heat of the lowermost oven.
- Another object of the present invention is to provide a cooling system for the oven control circuitry in a double-stack food preparation oven arrangement.
- Yet another object of the present invention is to provide a cooling system for the oven control circuitry in a food preparation oven that substantially insulates the circuitry from escaping radiating heat.
- a further object of the present invention is to provide a cooling system for the oven control circuitry in a food preparation oven that provides a flow of cooling air over the oven control circuitry for the cooling thereof.
- a still further object of the present invention is to provide a cooling system for the oven control circuitry in a food preparation oven that deflects radiating heat away from an enclosure enclosing the circuitry and the intake openings of the enclosure.
- Yet a further object of the present invention is to provide a cooling system for the oven control circuitry in a food preparation oven that creates an air curtain or buffer zone between the enclosure intake openings and the radiating heat, wherein the buffer zone temperature is substantially lower than the radiating heat temperature.
- FIG. 1 is a fragmentary, partially broken-away perspective view of a preferred embodiment of the present invention
- FIG. 2 is a second fragmentary perspective view of the embodiment in FIG. 1;
- FIG. 3 is a third fragmentary, partially-broken away perspective view of the embodiment in FIG. 1;
- FIG. 4 is a broken-away side elevational view of the control assembly in the embodiment in FIG. 1;
- FIG. 5 is a schematic illustrating the effect of the flow of cooling air created by the embodiment in FIG. 1 on an upwardly flow of radiating heat.
- double-stack food preparation oven arrangement 10 comprises food preparation oven 12 securely positioned over food preparation oven 14.
- Ovens 12,14 include respective cooking chambers 16,18, which typically include some type of heating element or apparatus for providing heat for cooking a food product, and respective generally horizontally disposed passageways 20,22 through which respective conveyor assemblies 24,26 extend.
- Conveyor assemblies 24,26 are utilized to convey a food product to be cooked through their respective ovens 12,14, and extend outwardly beyond ovens 12,14 as illustrated to assist in removing the cooked food product.
- Each conveyor assembly 24,26 comprises a conveyor frame 28,30 and other structural members (not shown) for supporting respective movable continuous belting 32,34.
- control assembly 36,38 Mounted on the side of each oven 12,14 is a respective control assembly 36,38, which are identical in structure. Thus, only a description of control assembly 36 will be given, and elements common to both assemblies 36,38 will be given the same reference numerals where appropriate.
- Control assembly 36 comprises an enclosure 40 connected to oven 12 by four mounting brackets 42, only two of which are illustrated; enclosure 40 being slightly spaced apart from oven 12 approximately one to two inches.
- the front of enclosure 40 includes a control panel 44 for operating oven 12.
- Control panel 44 includes digital readout 46 for indicating the baking time in minutes and seconds and oven temperature in degrees Fahrenheit, conveyor on-off switch 48, ventilating fan on-off switch 50, and heat on-off switch 52.
- Slightly below heat switch 52 is oven temperature adjusting rheostat 54
- slightly below conveyor switch 48 is oven time-adjustment rheostat 56, and time display set button 58.
- enclosure 40 encloses oven control circuitry 60 comprising control panel circuitry 62, display transformer 64, electronic temperature control 66, air pressure switch 68, conveyor motor speed control 70, fan activation relay 72, power cord distribution terminal block 74, heating circuit distribution terminal block 76, mercury relay 79, and motor 78 for operating conveyor assembly 24.
- Motor 78 and relay 79 are mounted on perforated interior support wall 77.
- heat escaping from passageway 22 of bottom oven 14 and from freshly cooked food products being conveyed out of oven 14 by conveyor assembly 26 radiates upwardly, as indicated by the curved arrows 80, and contacts mounting wall 82, upon which oven control circuitry 60 is mounted.
- the upwardly radiating heat heats mounting wall 82, which inturn radiates the heat to oven control circuitry 60.
- this radiating heat increases the temperature of oven control circuitry 60 to a point at which individual elements will function improperly, or prematurely fail.
- double wall assembly 84 is disposed on the bottom portion of enclosure 40 substantially between oven control circuitry 60 and the upwardly radiating heat, illustrated by arrows 80.
- Double wall assembly 84 includes mounting wall 82, a spaced-apart exterior wall 86, which is on the opposite side of mounting wall 82 from oven control circuitry 60, and continuous side wall 88.
- mounting wall 82, exterior wall 86, and continuous side wall 88 form therebetween ventilating compartment 90 having inlet 92 disposed in mounting wall 82 for receiving a flow of cooling air therethrough.
- the flow of cooling air passing through inlet 92 and ventilating compartment 90 exhausts through a plurality of apertures 94 disposed in side edge portion 96 and back edge portion 98 of exterior wall 86, a plurality of slotted openings 100 (FIG. 3) disposed in the back side 102 (FIGS. 3 and 4) of continuous side wall 88, and a plurality of outlets 104 (FIGS. 1 and 2) disposed in side portion 106 of continuous side wall 88.
- Each outlet 104 has a respective louver-like deflector 108 disposed downwardly and laterally to direct the flow of exhausting cooling air in a downwardly and lateral direction.
- Enclosure 40 includes a plurality of intake openings 110 disposed in its side portion 112 and back portion 114. Each intake opening 110 has a louver-like deflector 116 to prevent foreign particles from entering intake openings 110. Enclosure 40 also includes exhaust opening 118 in fan device 120, which is aligned with inlet 92, and fan device 120 is secured to mounting wall 82.
- fan device 120 is operated to begin and sustain a continual flow of cooling air that is drawn through intake openings 110 to pass over and around oven control circuitry 60 from different directions for the cooling thereof.
- the flow of cooling air is then urged by fan device 120 through opening 118 and inlet 92 into ventilating compartment 90.
- the flow of cooling air flows through ventilating compartment 90 in a multi-directional flow pattern as indicated by dashed arrows 122 (FIG. 1), and then flows out of ventilating compartment 90 through apertures 94, slotted openings 100, and outlets 104.
- the flow of cooling air performs two functions, one being to cool oven control circuitry 60, and the other being to provide an insulating effect for mounting wall 82 and oven control circuitry 60 against the upwardly radiating heat from oven 14 by cooling exterior wall 86.
- the surface temperature at conveyor assembly 26 can be 500° F., and will decrease somewhat to approximately 350° F. between conveyor assembly 26 and exterior wall 86. As the heat contacts and flows along exterior wall 86, its temperature is approximately 200° F., which will cause exterior wall 86 to have a temperature of about 160°-170° F.
- mounting wall 82 would be at the temperature range of 160°-170° F., and would eventually increase the temperature of circuitry 60 to that same range.
- the surface temperature of mounting wall 82 is only approximately 120° F.; a substantial temperature decrease of about 40°-50° F.
- the interaction between the radiating heat and the exhausting air flow begins to occur.
- the flow of exhausting air through apertures 94 is directed downwardly toward the radiating heat, thereby deflecting the heat away from side edge portion 96 and a back edge portion 98 of exterior wall 86.
- the flow of exhausting cooling air through outlets 104 is directed downwardly and laterally by deflectors 108, thereby further deflecting the radiating heat flow downwardly and laterally away from ventilating compartment 90 and enclosure intake openings 110.
- the temperature of the radiating heat as it is deflected downwardly and laterally by the flow of air through outlets 104 is approximately 160° F.
- the radiating heat flows upwardly and dissipates in the ambient surrounding air to a temperature of about 5°-10° F. above ambient. Further, the flow of exhausting cooling air through slotted openings 100 in back portion 114 of enclosure 40 deflects the radiating heat laterally away from enclosure intake openings 110.
- FIG. 5 A unique effect caused by apertures 94, slotted openings 100, and outlets 104 is illustrated in FIG. 5 wherein the downward and lateral deflection of the radiating heat away from ventilating compartment 90 and enclosure 40 creates an air buffer zone or air curtain 128 between intake openings 110 and the upwardly radiating heat. This prevents the warmer radiating heat from being drawn through intake openings 110 and circulated through enclosure 40 and ventilating compartment 90.
- This effect is further enhanced by exhausting the air flow through apertures 94, slotted openings 100, and outlets 104 at a much greater velocity than the velocity of the intake flow of air through intake openings 110.
- the velocity differential is primarily due to the effective cross-sectional flow area through ventilating compartment 90 being less than the effective cross-sectional flow area through enclosure 40. This velocity differential is illustrated by the difference in sizes of exhaust arrows 126 and intake arrows 124.
- oven 14 can also be provided with an identical double wall assembly 84 and fan device 120 if desired.
Abstract
Description
Claims (23)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US06/600,837 US4539469A (en) | 1984-04-16 | 1984-04-16 | Oven control circuitry cooling system for a double-stack food preparation oven arrangement |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US06/600,837 US4539469A (en) | 1984-04-16 | 1984-04-16 | Oven control circuitry cooling system for a double-stack food preparation oven arrangement |
Publications (1)
Publication Number | Publication Date |
---|---|
US4539469A true US4539469A (en) | 1985-09-03 |
Family
ID=24405237
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US06/600,837 Expired - Fee Related US4539469A (en) | 1984-04-16 | 1984-04-16 | Oven control circuitry cooling system for a double-stack food preparation oven arrangement |
Country Status (1)
Country | Link |
---|---|
US (1) | US4539469A (en) |
Cited By (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4698487A (en) * | 1984-08-03 | 1987-10-06 | Siegfried Meister | Process and apparatus for the heat treatment of meals |
US4886046A (en) * | 1987-10-26 | 1989-12-12 | Whirlpool Corporation | Motor control circuit for an eye level range |
US5025775A (en) * | 1990-06-04 | 1991-06-25 | Lincoln Foodservice Products, Inc. | Air delivery system and oven control circuitry cooling system for a low profile impingement oven |
US5042458A (en) * | 1987-10-26 | 1991-08-27 | Whirlpool Corporation | Bi-level exhaust venting system for an eye level range |
US5701388A (en) * | 1994-12-22 | 1997-12-23 | Kohler Co. | Combined heater and pump |
US5756974A (en) * | 1995-06-09 | 1998-05-26 | Samsung Electronics Co., Ltd. | Convection microwave oven having improved hot air circulation |
US6097000A (en) * | 1997-07-04 | 2000-08-01 | Whirlpool Corporation | Control panel ventilation system for electrical food cooking appliances comprising a cooking hob and an oven |
US6140619A (en) * | 1999-05-28 | 2000-10-31 | The Garland Group | Temperature control apparatus, method and memory medium for an oven |
US6526961B1 (en) | 2000-07-10 | 2003-03-04 | Lincoln Foodservice Products, Inc | Conveyor oven |
US20050048171A1 (en) * | 2003-08-29 | 2005-03-03 | Sockman Harry Gene | Method and apparatus for applying glaze or other coatings to food products |
DE102004047992A1 (en) * | 2004-10-01 | 2006-04-06 | BSH Bosch und Siemens Hausgeräte GmbH | Oven for the treatment of food by food |
US20070188282A1 (en) * | 2006-02-15 | 2007-08-16 | Folts Douglas C | Supplementary transformer cooling in a reactive power compensation system |
US20080045132A1 (en) * | 2004-06-22 | 2008-02-21 | Oy Halton Group Ltd. | Set And Forget Exhaust Controller |
US20090139976A1 (en) * | 2007-12-03 | 2009-06-04 | Robert Lee | Impingement quartz conveyor oven |
US20110209626A1 (en) * | 2009-09-01 | 2011-09-01 | Manitowoc Foodservice Companies, Llc | Method and Apparatus for Cooling a User Interface and/or Door of a Cooking Device |
US20140116261A1 (en) * | 2012-10-25 | 2014-05-01 | Midea Group Co., Ltd. | Electric cooking device |
US10667423B2 (en) * | 2018-10-26 | 2020-05-26 | Dell Products L.P. | Connector cooling and status indicator system |
CN116639437A (en) * | 2023-07-17 | 2023-08-25 | 东莞市食滋源食品有限公司 | Crisp transfer device of yolk |
Citations (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2237795A (en) * | 1937-12-21 | 1941-04-08 | Edison General Elec Appliance | Electric range |
US2622582A (en) * | 1949-04-12 | 1952-12-23 | Tappan Stove Co | Ventilating and cooling means for cooking ranges |
US2960633A (en) * | 1957-02-07 | 1960-11-15 | Sylvania Electric Prod | Electronic chassis construction |
US3364838A (en) * | 1966-02-01 | 1968-01-23 | Gen Electric | Cabinet for mounting, enclosing and cooling electrical apparatus |
US3633561A (en) * | 1970-01-02 | 1972-01-11 | Westinghouse Electric Corp | Built-in self-cleaning wall oven |
US3859499A (en) * | 1974-06-12 | 1975-01-07 | Gen Motors Corp | Airflow cooling system for heat-cleaning ranges |
US3889099A (en) * | 1974-07-31 | 1975-06-10 | Gen Electric | Door cooling system |
US4027206A (en) * | 1975-01-27 | 1977-05-31 | L. H. Research | Electronic cooling chassis |
US4100463A (en) * | 1975-11-05 | 1978-07-11 | Hitachi, Ltd. | Magnetron, power supply, and fan integral assembly |
US4180049A (en) * | 1978-01-09 | 1979-12-25 | Whirlpool Corporation | Oven assembly air circulation system |
US4184945A (en) * | 1978-06-12 | 1980-01-22 | Litton Systems, Inc. | Microwave wall oven air flow system |
US4462383A (en) * | 1982-06-09 | 1984-07-31 | Lincoln Manufacturing Company, Inc. | Impingement food preparation apparatus |
-
1984
- 1984-04-16 US US06/600,837 patent/US4539469A/en not_active Expired - Fee Related
Patent Citations (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2237795A (en) * | 1937-12-21 | 1941-04-08 | Edison General Elec Appliance | Electric range |
US2622582A (en) * | 1949-04-12 | 1952-12-23 | Tappan Stove Co | Ventilating and cooling means for cooking ranges |
US2960633A (en) * | 1957-02-07 | 1960-11-15 | Sylvania Electric Prod | Electronic chassis construction |
US3364838A (en) * | 1966-02-01 | 1968-01-23 | Gen Electric | Cabinet for mounting, enclosing and cooling electrical apparatus |
US3633561A (en) * | 1970-01-02 | 1972-01-11 | Westinghouse Electric Corp | Built-in self-cleaning wall oven |
US3859499A (en) * | 1974-06-12 | 1975-01-07 | Gen Motors Corp | Airflow cooling system for heat-cleaning ranges |
US3889099A (en) * | 1974-07-31 | 1975-06-10 | Gen Electric | Door cooling system |
US4027206A (en) * | 1975-01-27 | 1977-05-31 | L. H. Research | Electronic cooling chassis |
US4100463A (en) * | 1975-11-05 | 1978-07-11 | Hitachi, Ltd. | Magnetron, power supply, and fan integral assembly |
US4180049A (en) * | 1978-01-09 | 1979-12-25 | Whirlpool Corporation | Oven assembly air circulation system |
US4184945A (en) * | 1978-06-12 | 1980-01-22 | Litton Systems, Inc. | Microwave wall oven air flow system |
US4462383A (en) * | 1982-06-09 | 1984-07-31 | Lincoln Manufacturing Company, Inc. | Impingement food preparation apparatus |
Cited By (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4698487A (en) * | 1984-08-03 | 1987-10-06 | Siegfried Meister | Process and apparatus for the heat treatment of meals |
US4886046A (en) * | 1987-10-26 | 1989-12-12 | Whirlpool Corporation | Motor control circuit for an eye level range |
US5042458A (en) * | 1987-10-26 | 1991-08-27 | Whirlpool Corporation | Bi-level exhaust venting system for an eye level range |
US5025775A (en) * | 1990-06-04 | 1991-06-25 | Lincoln Foodservice Products, Inc. | Air delivery system and oven control circuitry cooling system for a low profile impingement oven |
EP0460803A2 (en) * | 1990-06-04 | 1991-12-11 | Lincoln Foodservice Products, Inc. | Improved air delivery system and oven control circuitry cooling system for a low profile impingement oven |
EP0460803A3 (en) * | 1990-06-04 | 1992-10-21 | Lincoln Foodservice Products, Inc. | Improved air delivery system and oven control circuitry cooling system for a low profile impingement oven |
US5701388A (en) * | 1994-12-22 | 1997-12-23 | Kohler Co. | Combined heater and pump |
US5756974A (en) * | 1995-06-09 | 1998-05-26 | Samsung Electronics Co., Ltd. | Convection microwave oven having improved hot air circulation |
US6097000A (en) * | 1997-07-04 | 2000-08-01 | Whirlpool Corporation | Control panel ventilation system for electrical food cooking appliances comprising a cooking hob and an oven |
US6140619A (en) * | 1999-05-28 | 2000-10-31 | The Garland Group | Temperature control apparatus, method and memory medium for an oven |
US6526961B1 (en) | 2000-07-10 | 2003-03-04 | Lincoln Foodservice Products, Inc | Conveyor oven |
US20050048171A1 (en) * | 2003-08-29 | 2005-03-03 | Sockman Harry Gene | Method and apparatus for applying glaze or other coatings to food products |
US7293525B2 (en) | 2003-08-29 | 2007-11-13 | Hdn Development Corporation | Method and apparatus for applying glaze or other coatings to food products |
US7775865B2 (en) | 2004-06-22 | 2010-08-17 | Oy Halton Group Ltd. | Set and forget exhaust controller |
US20080045132A1 (en) * | 2004-06-22 | 2008-02-21 | Oy Halton Group Ltd. | Set And Forget Exhaust Controller |
DE102004047992A1 (en) * | 2004-10-01 | 2006-04-06 | BSH Bosch und Siemens Hausgeräte GmbH | Oven for the treatment of food by food |
US20070188282A1 (en) * | 2006-02-15 | 2007-08-16 | Folts Douglas C | Supplementary transformer cooling in a reactive power compensation system |
US7567160B2 (en) * | 2006-02-15 | 2009-07-28 | American Superconductor Corporation | Supplementary transformer cooling in a reactive power compensation system |
US20090139976A1 (en) * | 2007-12-03 | 2009-06-04 | Robert Lee | Impingement quartz conveyor oven |
US20110209626A1 (en) * | 2009-09-01 | 2011-09-01 | Manitowoc Foodservice Companies, Llc | Method and Apparatus for Cooling a User Interface and/or Door of a Cooking Device |
US9686825B2 (en) | 2009-09-01 | 2017-06-20 | Manitowoc Foodservice Uk Limited | Method and apparatus for cooling a user interface and/or door of a cooking device |
US20140116261A1 (en) * | 2012-10-25 | 2014-05-01 | Midea Group Co., Ltd. | Electric cooking device |
US9743795B2 (en) * | 2012-10-25 | 2017-08-29 | Midea Group Co., Ltd. | Electric cooking device |
US10667423B2 (en) * | 2018-10-26 | 2020-05-26 | Dell Products L.P. | Connector cooling and status indicator system |
CN116639437A (en) * | 2023-07-17 | 2023-08-25 | 东莞市食滋源食品有限公司 | Crisp transfer device of yolk |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US4539469A (en) | Oven control circuitry cooling system for a double-stack food preparation oven arrangement | |
EP0460803B1 (en) | Improved air delivery system and oven control circuitry cooling system for a low profile impingement oven | |
US4386558A (en) | Convection cooking equipment | |
CA1287271C (en) | Oven with radiant panel | |
EP0105931B1 (en) | Hot air circulation type cooking device | |
US3221729A (en) | Oven supplied with hot air through foraminous duct-shelves | |
US4616562A (en) | Ventilation system for pizza ovens | |
US5816234A (en) | Convection oven | |
US4722683A (en) | Rethermalization oven | |
US5671660A (en) | Heated air-circulating oven | |
JPH0235210B2 (en) | ||
JPS6091143A (en) | Heat-insulating cabinet | |
US5584237A (en) | Heated air-circulating oven | |
US5205273A (en) | Convection-radiant heated oven | |
US3596650A (en) | Ventilated cooking range | |
US20110303100A1 (en) | Conveyor Toaster with Air-Cooled Panels | |
US3414708A (en) | Forced convection oven | |
US4297558A (en) | Composite cooking device | |
EP3549390B1 (en) | Convection system for employment with an rf oven | |
US4465701A (en) | Method of convection cooking of food | |
US4857685A (en) | Microwave oven with improved humidity sensing means | |
CN110214469B (en) | Apparatus and system for solid state oven electronics cooling | |
WO1999057496A1 (en) | Apparatus for air-treatment of products | |
US4534987A (en) | Method of convection cooking of food | |
US4320275A (en) | Microwave oven with resistance heating unit |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: LINCOLN MANUFACTURING COMPANY, INC., 1111 NORTH HA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:GIGANDET, RICHARD W.;REEL/FRAME:004250/0466 Effective date: 19840416 |
|
AS | Assignment |
Owner name: LINCOLN FOODSERVICE PRODUCTS, INC. Free format text: CHANGE OF NAME;ASSIGNOR:LINCOLN MANUFACTURING COMPANY, INC.;REEL/FRAME:004634/0068 Effective date: 19860409 |
|
FEPP | Fee payment procedure |
Free format text: PAT HOLDER CLAIMS SMALL ENTITY STATUS - SMALL BUSINESS (ORIGINAL EVENT CODE: SM02); ENTITY STATUS OF PATENT OWNER: SMALL ENTITY Free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: SMALL ENTITY |
|
FPAY | Fee payment |
Year of fee payment: 4 |
|
LAPS | Lapse for failure to pay maintenance fees | ||
FP | Lapsed due to failure to pay maintenance fee |
Effective date: 19930905 |
|
STCH | Information on status: patent discontinuation |
Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362 |